Lightbulb



FIG. 1 is a front perspective view of a first embodiment of a lightbulb according to the present invention;

FIG. 2 is a front view of the first embodiment of the lightbulb;

FIG. 3 is a rear view of the first embodiment of the lightbulb;

FIG. 4 is a left side view of the first embodiment of the lightbulb;

FIG. 5 is a right side view of the first embodiment of the lightbulb;

FIG. 6 is a top view of the first embodiment of the lightbulb;

FIG. 7 is a bottom view of the first embodiment of the lightbulb;

FIG. 8 is a front perspective view in open position of the first embodiment of the lightbulb;

FIG. 9 is a front view in open position of the first embodiment of the lightbulb;

FIG. 10 is a rear view in open position of the first embodiment of the lightbulb;

FIG. 11 is a left side view in open position of the first embodiment of the lightbulb;

FIG. 12 is a right side view in open position of the first embodiment of the lightbulb;

FIG. 13 is a top view in open position of the first embodiment of the lightbulb;

FIG. 14 is a bottom view in open position of the first embodiment of the lightbulb;

FIG. 15 is a front perspective view of a second embodiment of a lightbulb according to the present invention;

FIG. 16 is a front view of the second embodiment of the lightbulb;

FIG. 17 is a rear view of the second embodiment of the lightbulb;

FIG. 18 is a left side view of the second embodiment of the lightbulb;

FIG. 19 is a right side view of the second embodiment of the lightbulb;

FIG. 20 is a top view of the second embodiment of the lightbulb;

FIG. 21 is a bottom view of the second embodiment of the lightbulb;

FIG. 22 is a front perspective view in open position of the second embodiment of the lightbulb;

FIG. 23 is a front view in open position of the second embodiment of the lightbulb;

FIG. 24 is a rear view in open position of the second embodiment of the lightbulb;

FIG. 25 is a left side view in open position of the second embodiment of the lightbulb;

FIG. 26 is a right side view in open position of the second embodiment of the lightbulb;

FIG. 27 is a top view in open position of the second embodiment of the lightbulb; and,

FIG. 28 is a bottom view in open position of the second embodiment of the lightbulb.

The broken lines in the figures are included for the purpose of illustrating the environment in which the design is used and form no part of the claimed design. 

CLAIM The ornamental design for a lightbulb, as shown and described. 